Just got new pistons and rings. Do I need to hone cylinder

[farmergunner]

I did a compression test on a banshee I just picked up and it was reading 30 so I took the jugs off and found the rings were broke. The cylinders look good inside and are smooth. I mixed the cylinder and they are still with stock perimeters so I ordered stock 64 mm pistons and rings. My question is do I need to hone the cylinders before installing the new pistons or can I go ahead and install. I have never had to hone a stock bike before but I see a lot of people on here saying they did it when they replaced the pistons.

 

Thanks jamie

[trickedcarbine]

Yes. Any time new shit goes in. There was a ring in pieces? So there may even be enough damage to need a bore. The pistons are already bought? I sure hope the bores aren't all egg shape and scarred up.

[farmergunner]

Yes one of the rings was in three pieces but still in its slot. There is no visible scarring on the bore and when I mic'd the cylinder it was all within stock spec still

[sheerider11]

Did you take 6 measurements to make sure it's not an egg?

[Banman1122]

You need to check them with a micrometer and a telescoping gage to check the bore an inch down and in 6 places. Top mid and bottom front to back and left to right. A caliper only can check the top and bottom the middle is very important to check as well.

 

 

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[Banman1122]

Also a light hone is good so the new rings can seat properly.

 

 

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[farmergunner]

Thanks guys for the info. I borrowed a telescoping gage and I do have an egg. Had to get them

Bored and ordered new pistons . Another week on this long build

Project

[lil Doobie420]

Damn that sux. Atleast u didn't get too far with it.

[Banman1122]

Good deal. You can return the pistons you did get.

 

 

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